30 lines
567 B
C
30 lines
567 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_SCORE_DELAY_H
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#define _ASM_SCORE_DELAY_H
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#include <asm-generic/param.h>
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static inline void __delay(unsigned long loops)
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{
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/* 3 cycles per loop. */
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__asm__ __volatile__ (
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"1:\tsubi\t%0, 3\n\t"
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"cmpz.c\t%0\n\t"
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"ble\t1b\n\t"
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: "=r" (loops)
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: "0" (loops));
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}
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static inline void __udelay(unsigned long usecs)
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{
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unsigned long loops_per_usec;
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loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
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__delay(usecs * loops_per_usec);
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}
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#define udelay(usecs) __udelay(usecs)
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#endif /* _ASM_SCORE_DELAY_H */
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